20472514997 has 8 divisors (see below), whose sum is σ = 23103779040. Its totient is φ = 17969605360.

The previous prime is 20472514973. The next prime is 20472514999. The reversal of 20472514997 is 79941527402.

It is a happy number.

It is a sphenic number, since it is the product of 3 distinct primes.

It is a cyclic number.

It is not a de Polignac number, because 20472514997 - 2¹² = 20472510901 is a prime.

It is a Duffinian number.

It is a congruent number.

It is not an unprimeable number, because it can be changed into a prime (20472514999) by changing a digit.

It is a polite number, since it can be written in 7 ways as a sum of consecutive naturals, for example, 32088263 + ... + 32088900.

It is an arithmetic number, because the mean of its divisors is an integer number (2887972380).

Almost surely, 2^20472514997 is an apocalyptic number.

It is an amenable number.

20472514997 is a deficient number, since it is larger than the sum of its proper divisors (2631264043).

20472514997 is a wasteful number, since it uses less digits than its factorization.

20472514997 is an odious number, because the sum of its binary digits is odd.

The sum of its prime factors is 64177203.

The product of its (nonzero) digits is 1270080, while the sum is 50.

The spelling of 20472514997 in words is "twenty billion, four hundred seventy-two million, five hundred fourteen thousand, nine hundred ninety-seven".